Giant GP8045 User Manual
Models
GP8045 / GP8048
Triplex Ceramic
Plunger Pump
Models Manual
Contents:
Installation Instructions: page 2
Pump Specifications (GP8045): page 3
Exploded View page 4
Parts List: page 5
Pump Specifications (GP8048): page 6
Repair Kits/Tool List:/Torque Specifications page 7
Troubleshooting Chart: page 7
Repair Instructions: pages 8-10
Dimensions: page 11
Warranty Information back page
INSTALLATION INSTRUCTIONS
Installation of the Giant Industries, Inc., pump is not a
complicated procedure, but there are some basic steps
common to all pumps. The following information is to be
considered as a general outline for installation. If you
have unique requirements, please contact Giant Industries, Inc. or your local distributor for assistance.
1. The pump should be installed flat on a base to a
maximum of a 15 degree angle of inclination to ensure
optimum lubrication.
2. The inlet to the pump should be sized for the flow rate
of the pump with no unnecessary restrictions that can
cause cavitation. Teflon tape should be used to seal all
joints. If these pumps are to be operated at temperatures
in excess of 86o F, it is important to insure a positive head
to the pump to prevent cavitation.
3. The discharge plumbing from the pump should be
properly sized to the flow rate to prevent line pressure
loss to the work area. It is essential to provide a safety
bypass valve between the pump and the work area to
protect the pump from pressure spikes in the event of a
blockage or the use of a shut-off gun.
5. Crankshaft rotation on Giant Industries, Inc.
pumps should be made in the direction designated by
the arrows on the pump crankcase. Reverse rotation
may be safely achieved by following a few guidelines
available upon request from Giant Industries, Inc.
Required horsepower for system operation can be
obtained from the charts on pages 3 and 6.
6. Before beginning operation of your pumping
system, remember: Check that the crankcase and seal
areas have been properly lubricated per recommended schedules. Do not run the pump dry for
extended periods of time. Cavitation will result in
severe damage. Always remember to check that all
plumbing valves are open and that pumped media
can flow freely to the inlet of the pump.
The service life of the seals is
maximized if a minimal amount of leakage is
present. A few drops of water can drip from
each plunger every minute. Leakage has to be
examined every day; the plunger seals must be
changed should leakage become excessive
(=constant dripping).
4. Use of a dampener is necessary to minimize pulsation
at drive elements, plumbing, connections, and other
system areas. The use of a dampener with Giant Industries, Inc. pumps is optional, although recommended by
Giant Industries, Inc. to further reduce system pulsation.
Dampeners can also reduce the severity of pressure
spikes that occur in systems using a shut-off gun. A
dampener must be positioned downstream from the
unloader.
IMPORTANT OPERATING CONDITIONS
Failure to comply with any of these conditions invalidates the warranty
1. Prior to initial operation, add oil to crankcase so that
oil level is between the two lines on the oil dipstick. DO
NOT OVERFILL.
Use Industrial synthetic gear lube oil (ISO VG 220),
such as Mobil Gear 630, Shell Oamala oil 220 or
Texaco Meropa 220.
Crankcase oil should be changed after the first 50 hours
of operation, then at regular intervals of 500 hours or
less depending on operating conditions.
2. Pump operation must not exceed rated pressure,
volume, or RPM. A pressure relief device must be
installed in the discharge of the system.
Finally, remember that high pressure operation in a
pump system has many advantages. But, if it is
used carelessly and without regard to its potential
hazard, it can cause serious injury.
4. Run the pump dry approximately 10 seconds to
drain the water before exposure to freezing temperatures.
5. The pump and cooling system must
be emptied if there is a danger of frost. Note that
travel wind, for example, can cause water in pumps
fitted on open vehicles to freeze even if the outside
temperature is above freezing point.
To empty the cooling circuit, remove the L-joints
(K11) on the pump head (50). Blow out the circuit
liquid at the joint connection (K11/K7) using
compressed air.
The torque tension on the valve casing nuts (49A)
should be checked after approximately 200 operating
hours. Please see page 8 for torque values.
3. Acids, alkalines, or abrasive fluids cannot be pumped
unless approval in writing is obtained before operation
from Giant Industries, Inc. Pump fluid should be filtered
to 300 micron.
2
Specifications
Model GP8045
U.S. (Metric)
Volume .............................................................Up to 48.9 GPM ...... (185 LPM)
Discharge Pressure .........................................Up to 4350 PSI........ (300 bar)
Speed ...............................................................Up to 580 RPM ....... 580 RPM
Inlet Pressure...................................................Up to 29 PSI............ (2.0 bar)
Plunger Diameter............................................. 1.77” ........................ 45mm
Plunger Stroke .................................................2.83” ........................ 72mm
Crankshaft Diameter........................................2.76”........................ 70mm
Key Width........................................................0.55” ........................ 14mm
Crankshaft Mounting......................................................................... Either side
Shaft Rotation.................................................................................... Top of pulley towards manifold
T emperature of Pumped Fluids........................Up to 86
Inlet Ports .......................................................................................... (2) 3” BSP
Discharge Ports ................................................................................. (2) 1-1/4” BSP
Weight ..............................................................705 lbs. .................... (320kg)
Crankcase Oil Capacity ...................................3.3 Gal. .................... (12.5 liters)
Fluid End Material............................................Nickle plated Spheroidical Cast Iron
o
F .............. (30 oC)
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
HORSEPOWER RATINGS:
GP8045 HORSEPOWER
REQUIREMENTS
RPM GP M 1000 PS I 20 00 PS I 3000 PS I 4350 P S I
300 25.3 17.4 34.9 52.3 75.9
400 33.7 23.2 46.5 69.7 101.1
500 42.2 29.1 58.2 87.3 126.6
580 48.9 33.7 67.5 101.2 146.7
an electric motor as the power
source. To compute specific pump
SPECIAL NOTE:
The theoretical gallons per revolution (gal/rev) is 0.0843.
T o find specific outputs at various RPM, use the formula:
The rating shown are the power
requirements for the pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
We recommend a 1.15 service
factor be specified when selecting
horse power requirements, use the
following formula:
GPM X PSI
1450
= HP
GPM = 0.0843 x RPM
3
EXPLODED VIEW -- GP8045 / GP8048
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